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Issue 8, 2019
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High-throughput single-particle detections using a dual-height-channel-integrated pore

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Abstract

We report a proof-of-principle demonstration of particle concentration to achieve high-throughput resistive pulse detections of bacteria using a microfluidic-channel-integrated micropore. We fabricated polymeric nanochannels to trap micrometer-sized bioparticles via a simple water pumping mechanism that allowed aggregation-free size-selective particle concentration with negligible loss. Single-bioparticle detections by ionic current measurements were then implemented through releasing and transporting the thus-collected analytes to the micropore. As a result, we attained two orders of magnitude enhancement in the detection throughput by virtue of an accumulation effect via hydrodynamic control. The device concept presented may be useful in developing nanopores and nanochannels for high-throughput single-particle and -molecule analyses.

Graphical abstract: High-throughput single-particle detections using a dual-height-channel-integrated pore

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Publication details

The article was received on 16 Dec 2018, accepted on 16 Feb 2019 and first published on 25 Mar 2019


Article type: Paper
DOI: 10.1039/C8LC01371C
Lab Chip, 2019,19, 1352-1358
  • Open access: Creative Commons BY-NC license
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    High-throughput single-particle detections using a dual-height-channel-integrated pore

    W. Tonomura, M. Tsutsui, A. Arima, K. Yokota, M. Taniguchi, T. Washio and T. Kawai, Lab Chip, 2019, 19, 1352
    DOI: 10.1039/C8LC01371C

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